 ITB project, Honda VFR 800 ITBs |
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| kevin311 |
 Aug 17 2012, 11:25 AM
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#1
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Member  Group: Members Posts: 105 Joined: 22-May 10 From: Tampa Bay Area Member No.: 11,752 Region Association: None  |
I've been running Megasquirt II for a while now on my 71 1.7 with the stock D-jet components and it has been running well. But everything is looking tired in the engine bay and I am planning on taking out the engine to clean everything up and install SS fuel lines.
Then I remembered seeing a video youtube with an australian guy reviewing his 914 and he mentioned having GSXR ITBs on his car. Sounds like a fun project to me so I started researching and think I have found an even better solution. The throttle bodies I found are from a 2001 Honda VFR800. The bike is a V4 so the TBs and fuel rails are already split into pairs, and have a linkage that connects both. They have 37mm throats, and came with the throttle position sensor, fuel pressure regulator , injectors and and all the wiring and connectors. Also the brackets on the sides already have a tab for throttle cable. The injectors are high impedance so I wont have to run PWM on Megasquirt anymore and hopefully can get an even finer tune. I'm also thinking about switching the PCs for 96mm, but I think that will wait until later, but you never know this started out as an engine cleaning... The only things I need to figure out are the flow rate of the injectors, where I'm going to hook up the IAT sensor, and will need to build a vacuum plenum. Also these injectors run at 36 psi, can the stock fuel pump handle that or do I need to look for another solution? Here are some pics, check out how close the spacing is for weber manifolds. Please excuse the dirt. I still haven't cleaned them up. This is gonna be fun. (IMG:style_emoticons/default/beerchug.gif) (IMG:http://www.914world.com/bbs2/uploads_offsite/i694.photobucket.com-11752-1345224315.1.jpg) (IMG:http://i694.photobucket.com/albums/vv310/Kevin31188/DSC03555.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i694.photobucket.com-11752-1345224325.2.jpg) (IMG:http://i694.photobucket.com/albums/vv310/Kevin31188/DSC03552.jpg) (IMG:http://i694.photobucket.com/albums/vv310/Kevin31188/DSC03558.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i694.photobucket.com-11752-1345224346.3.jpg) (IMG:http://i694.photobucket.com/albums/vv310/Kevin31188/DSC03559.jpg) |
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Replies
| Dr Evil |
Aug 17 2012, 01:41 PM
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#2
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Send me your transmission! Group: Members Posts: 23,041 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region 
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Always interesting (IMG:style_emoticons/default/popcorn[1].gif)
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Posts in this topic
kevin311 ITB project Aug 17 2012, 11:25 AM
mrbubblehead :popcorn: Aug 17 2012, 02:02 PM DBCooper I had the GSXR TB's back in the day. I actual... Aug 17 2012, 02:06 PM kevin311 :agree:
The best part is the whole assembly was ... Aug 17 2012, 03:59 PM mrbubblehead did you happen to get the mounting boots? looks li... Aug 17 2012, 04:02 PM mrbubblehead seems like i recall someone over on the type4um do... Aug 17 2012, 04:09 PM kevin311 The plan is to fab up some adapter flanges to moun... Aug 17 2012, 04:33 PM ChrisNPDrider :popcorn: Aug 17 2012, 06:59 PM rick 918-S Love it! :popcorn: Easy to make an adaptor to ... Aug 17 2012, 07:21 PM euro911 Looks interesting. :popcorn:
I don't know mu... Aug 17 2012, 08:11 PM kevin311 I got the ITBs mocked up on an engine today. I fou... Nov 25 2012, 02:32 PM Sleepin Wow! Amazing project!
Are the Harley ada... Nov 25 2012, 02:48 PM ConeDodger I'm not sure how well this will work. I have t... Nov 25 2012, 03:42 PM
Dave_Darling
If so, you had about 1.75" of throttle plate... Nov 25 2012, 06:50 PM DBCooper
If so, you had about 1.75" of throttle plat... Apr 10 2013, 11:15 AM ConeDodger To answer your questions, yes, the stock pump on m... Nov 25 2012, 03:48 PM kevin311 I had similar thoughts about the throttles when I ... Nov 25 2012, 04:47 PM ConeDodger I thought of that too. Carbs cover their sins in m... Nov 25 2012, 04:59 PM Dr Evil Dont forget to use a phenolic spacer to soak up th... Nov 25 2012, 06:25 PM euro911 Dont forget to use a phenolic spacer to soak up th... Nov 25 2012, 06:42 PM wndsrfr Super cool looking setup but I'm concerned wit... Nov 25 2012, 06:32 PM aircooledtechguy
Super cool looking setup but I'm concerned wi... Nov 25 2012, 10:22 PM FourBlades Go go go!
Love how cheap the tbs are...
A gr... Nov 25 2012, 06:42 PM rdauenhauer
I had similar thoughts about the throttles when I... Nov 25 2012, 07:21 PM aircooledtechguy I don't think you'll need to be too worrie... Nov 25 2012, 08:28 PM kevin311 So the project took a back shelf for a while becau... Apr 10 2013, 10:25 AM Mark Henry Very cool, I'm about to do the same thing on m... Apr 10 2013, 11:07 AM monkeyboy
[quote name='Dave_Darling' post='1773574' date='N... Apr 10 2013, 02:09 PM rick 918-S Just purchased a set of these VFR ITB's off eb... Apr 10 2013, 07:39 PM ThePaintedMan Kevin,
Three things.
1 - I'm glad that it... Apr 10 2013, 09:34 PM DBCooper Those guys wad up bikes pretty frequently, so thos... Apr 10 2013, 10:45 PM ottox914 That is going to be amazing when done. Keep the u... Apr 13 2013, 07:24 AM kevin311 Thanks everyone! :beer2:
Just a quick update... May 12 2013, 09:57 AM moparrob
Thanks everyone! :beer2:
Just a quick updat... May 12 2013, 01:13 PM Dr Evil Re-following this :D
:popcorn: May 12 2013, 05:58 PM kevin311 Just a quick update for those interested.
I finis... Jul 14 2013, 03:47 PM billh1963 Really looking forward to seeing how this works ou... Jul 14 2013, 04:37 PM aircooledtechguy Looking good. . .
:popcorn: Jul 14 2013, 07:47 PM rick 918-S Excuse my ignorance I'm old so I do not know t... Jul 14 2013, 10:03 PM aircooledtechguy
Excuse my ignorance I'm old so I do not know ... Jul 14 2013, 10:56 PM Dave_Darling Intake Air Temp sensor. Dunno why it's out th... Jul 14 2013, 10:58 PM kevin311 Yea I couldn't find a spot underneath that wou... Jul 15 2013, 05:45 AM craigrobbo I came here from another forum with a similar buil... Nov 20 2013, 04:05 AM Mark Henry I have a similar thread somewhere, I need to updat... Nov 20 2013, 07:07 AM craigrobbo
I have a similar thread somewhere, I need to upda... Nov 20 2013, 03:45 PM Mark Henry
[quote name='Mark Henry' post='1959555' date='Nov... Nov 21 2013, 07:47 PM kevin311 No updates lately. This project has been shelved f... Nov 20 2013, 06:15 PM 2mAn Bummed you didnt get a chance to finish, this is e... Nov 21 2013, 04:44 PM 914_teener I was interested in these working at all. Fun proj... Nov 21 2013, 05:09 PM rick 918-S Any up dates? Feb 3 2014, 04:30 PM ClayPerrine This is a cool project, but I think that you are g... Feb 3 2014, 05:11 PM Mark Henry
This is a cool project, but I think that you are ... Feb 3 2014, 08:31 PM r_towle
This is a cool project, but I think that you are... Feb 3 2014, 08:35 PM |
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